How to Use a Tuning Fork?

[Hawaiihealing]

Tuning forks are traditionally used to tune musical instruments – the sound they make is totally pure. The applications all rely on the fact that when a tuning fork is struck, that energy is converted into vibrational energy, and its tines oscillate at a particular frequency to produce a specific pitch of note.It really helpful to our body. the tunes directly affect to our mind and decrease the stress and other diseases. Now-a-days, it becomes more popular method for treatment of any kind of diseases.

[axiom]

Best method is to keep smacking it against your head repeatedly until the sound stops fading away.

[Yarco]

Can you explain the difference between a pure and impure sound?

How is the tuning fork any more pure than hitting a note on an in-tune piano?

What is particularly healing about vibrational energy? What's the mechanism of action by which vibrations can heal the human body?

How do you know if a particular healing fork is producing a healing or harmful sound?

[Mulky]

The piano has the fundamental frequency, but also other harmonics above it, as does pretty much every sound.  I think when they say pure sound they mean just the fundamental frequency.